Display panel and display apparatus

Abstract

The present disclosure relates to the technical field of display. Disclosed are a display panel and a display apparatus, which can prevent spectrum variation caused by moisture and improve the display effect. The display panel comprises: a drive substrate, which comprises a substrate layer and a drive layer, wherein the drive layer is disposed on one side of the substrate layer; a light-emitting device layer, which is disposed on the side of the drive layer that is away from the substrate layer, wherein the light-emitting device layer comprises a pixel defining layer and a light-emitting layer, the pixel defining layer comprising a plurality of pixel openings, and the light-emitting layer being disposed in the pixel openings; a support layer, which is disposed on the side of the pixel defining layer that is away from the substrate layer; a first encapsulation layer, which is disposed on the side of the light-emitting device layer and the support layer that is away from the substrate layer; and a first filter layer, which is disposed between the first encapsulation layer and a second encapsulation layer, wherein an orthographic projection of the first filter layer on the substrate layer covers orthographic projections of first hollows and the pixel openings on the substrate layer, and the refractive index of the first filter layer is greater than the refractive index of the first encapsulation layer.

Description

A display panel and display device Cross-reference to related applications

[0001] This disclosure claims priority to Chinese patent application No. 202411748625.6, filed on November 29, 2024, the entire contents of which are incorporated herein by reference. Technical Field

[0002] This disclosure relates to the field of display technology, and more particularly to a display panel and display device. Background Technology

[0003] Currently, display devices with advantages such as high-generation production capacity and low cost are widely used in televisions, computers, mobile phones, and other fields. With the rise of display technologies such as LCD (Liquid Crystal Display) and OLED (Organic Light Emitting Diode), improving the brightness of the displayed image is one of the important factors in enhancing the user experience; therefore, improving the display effect is crucial. However, in existing technologies, displays suffer from significant light loss over wide viewing angles, resulting in low display brightness and affecting the display effect. Summary of the Invention

[0004] This disclosure provides a display panel and display device that can increase the forward light emission of the display panel and improve the display effect.

[0005] A first aspect of this disclosure provides a display panel, including:

[0006] A driving substrate, the driving substrate including a substrate layer and a driving layer, the driving layer being disposed on one side of the substrate layer;

[0007] A light-emitting device layer is disposed on the side of the driving layer away from the substrate layer. The light-emitting device layer includes a pixel defining layer and a light-emitting layer. The pixel defining layer includes a plurality of pixel openings, and the light-emitting layer is disposed in the pixel openings.

[0008] A support layer is disposed on the side of the pixel defining layer away from the substrate layer. The support layer includes a plurality of first cutouts, the orthogonal projection of the first cutouts on the substrate layer covering the orthogonal projection of the pixel opening on the substrate layer.

[0009] A first encapsulation layer is disposed on the side of the light-emitting device layer and the support layer away from the substrate layer;

[0010] A first filter layer is disposed on the side of the first encapsulation layer away from the substrate layer. The orthographic projection of the first filter layer on the substrate layer covers the orthographic projection of the first cutout and the pixel opening on the substrate layer. The refractive index of the first filter layer is greater than the refractive index of the first encapsulation layer.

[0011] In some embodiments, the display panel further includes:

[0012] At least two inorganic layers, with the first filter layer disposed between the at least two inorganic layers.

[0013] In some implementations, the first filter layer is used to transmit light in multiple target wavelength bands.

[0014] In some embodiments, the first filter layer has transmittance troughs in the transmittance spectrum within the wavelength ranges of 480 nm to 530 nm and 580 nm to 630 nm, respectively.

[0015] In some embodiments, the first filter layer includes a plurality of filter regions, wherein at least two of the filter regions are used to transmit light of different target wavelengths;

[0016] The orthogonal projection of the filter region onto the substrate layer overlaps the orthogonal projection of the pixel opening onto the substrate layer.

[0017] In some embodiments, the display panel further includes:

[0018] A second encapsulation layer is disposed on the side of the first filter layer away from the substrate layer. The first encapsulation layer includes at least one inorganic layer, and / or the second encapsulation layer includes at least one inorganic layer.

[0019] In some embodiments, the display panel is characterized by further comprising:

[0020] A first isolation layer is disposed on the side of the second encapsulation layer away from the substrate layer, and the first isolation layer includes at least one inorganic layer;

[0021] A second filter layer is disposed between the second encapsulation layer and the first isolation layer. The size of the second filter layer on the side closer to the substrate is larger than the size of the second filter layer on the side farther from the substrate, and the refractive index of the second filter layer is greater than the refractive index of the first isolation layer.

[0022] In some embodiments, the display panel is characterized by further comprising:

[0023] A third encapsulation layer is disposed between the first filter layer and the second encapsulation layer, and the third encapsulation layer includes an organic layer;

[0024] A first isolation layer is disposed on the side of the second encapsulation layer away from the substrate layer, and the first isolation layer includes at least one inorganic layer;

[0025] A third filter layer, wherein the orthographic projection of the third filter layer on the substrate layer overlaps the orthographic projection of the light-emitting device layer on the substrate layer;

[0026] The third filter layer is disposed between the second encapsulation layer and the first isolation layer; and / or,

[0027] The third filter layer is disposed between the second encapsulation layer and the third encapsulation layer.

[0028] In some embodiments, the display panel is characterized by further comprising:

[0029] A touch layer is disposed on the side of the second encapsulation layer away from the substrate layer. The touch layer includes a first touch electrode, a second touch electrode, a light-shielding layer, and a protective layer, wherein the protective layer includes at least one organic layer.

[0030] A first isolation layer is disposed between the first touch electrode and the second touch electrode, the first touch electrode is disposed between the second encapsulation layer and the first isolation layer, the light-shielding layer is disposed between the second touch electrode and the protective layer, and the refractive index of the first isolation layer is less than the refractive index of the protective layer;

[0031] The orthographic projection of the light-shielding layer on the substrate covers the orthographic projections of the first touch electrode and the second touch electrode on the substrate, and the orthographic projection of the light-shielding layer on the substrate does not overlap with the orthographic projection of the pixel opening on the substrate.

[0032] In some embodiments, the light-emitting device layer includes a first electrode and a second electrode, the light-emitting layer is located between the first electrode and the second electrode, a portion of the first encapsulation layer is connected to the support layer, and the refractive index of the first encapsulation layer is greater than the refractive index of the support layer;

[0033] There is a case where part of the second electrode is located between the support layer and the first encapsulation layer, and the refractive index of the second electrode is greater than that of the support layer and less than that of the first encapsulation layer.

[0034] In some embodiments, at least a portion of the orthographic projection of the support layer onto the substrate falls within the orthographic projection of the pixel defining layer onto the substrate; and / or,

[0035] At least a portion of the orthographic projection of the pixel defining layer onto the substrate falls within the orthographic projection of the support layer onto the substrate;

[0036] The orthographic projection boundary of the support layer on the substrate layer and the orthographic projection boundary of the pixel defining layer on the substrate layer are spaced apart.

[0037] In some embodiments, the thickness of the support layer is greater than or equal to the thickness of the pixel defining layer, the thickness direction is perpendicular to the plane of the substrate layer, and the light transmittance of the pixel defining layer is less than the light transmittance of the support layer.

[0038] In some embodiments, the first perforated inner wall includes at least two stepped surfaces, two adjacent stepped surfaces are used to form a stepped structure, and the extended surface of at least one stepped surface intersects the plane of the substrate layer.

[0039] In some embodiments, the angle between the plane containing the support layer and the substrate layer ranges from 60° to 80°; and / or,

[0040] The refractive index of the first encapsulation layer is in the range of 1.4 to 1.5; and / or,

[0041] The refractive index of the second encapsulation layer is in the range of 1.4 to 1.5; and / or,

[0042] The refractive index of the support layer is in the range of 1.2 to 1.3; and / or,

[0043] The refractive index of the first filter layer ranges from 1.6 to 1.7.

[0044] A second aspect of this disclosure provides a display panel, including:

[0045] A driving substrate, the driving substrate including a substrate layer and a driving layer, the driving layer being disposed on one side of the substrate layer;

[0046] A light-emitting device layer is disposed on the side of the driving layer away from the substrate layer. The light-emitting device layer includes a pixel defining layer and a light-emitting layer. The pixel defining layer includes a plurality of pixel openings, and the light-emitting layer is disposed in the pixel openings.

[0047] A second encapsulation layer is disposed on the side of the light-emitting device layer away from the substrate layer, and the second encapsulation layer covers the light-emitting device layer;

[0048] A first isolation layer is disposed on the side of the second encapsulation layer away from the substrate layer;

[0049] A second filter layer is disposed between the second encapsulation layer and the first isolation layer. The orthographic projection of the second filter layer on the substrate layer covers the orthographic projection of the pixel opening on the substrate layer. The orthographic projection of the second filter layer on the substrate layer does not overlap or partially overlaps with the orthographic projection of the pixel defining layer on the substrate layer. The refractive index of the second filter layer is greater than that of the first isolation layer.

[0050] In some embodiments, the dimension of the second filter layer on the side closer to the substrate is larger than the dimension of the second filter layer on the side farther from the substrate, and the refractive index of the second filter layer is greater than the refractive index of the first isolation layer.

[0051] In some embodiments, the display panel is characterized by further comprising:

[0052] At least two inorganic layers, with the second filter layer disposed between the at least two inorganic layers.

[0053] In some implementations, the second filter layer is used to transmit light across multiple target wavelengths.

[0054] In some embodiments, the display panel is characterized by further comprising:

[0055] A first encapsulation layer is disposed between the second encapsulation layer and the light-emitting device layer. The first encapsulation layer includes at least one inorganic layer, and / or the second encapsulation layer includes at least one inorganic layer.

[0056] A third encapsulation layer is disposed between the first encapsulation layer and the second encapsulation layer, and the third encapsulation layer includes at least one organic layer;

[0057] A first filter layer is disposed between the first encapsulation layer and the third encapsulation layer. The orthographic projection of the first filter layer on the substrate layer covers the orthographic projection of the light-emitting device layer on the substrate layer. The refractive index of the first filter layer is greater than the refractive index of the first encapsulation layer.

[0058] In some embodiments, the display panel is characterized by further comprising:

[0059] A support layer is disposed between the pixel defining layer and the first encapsulation layer. The support layer includes a plurality of first cutouts, the orthographic projection of the first cutouts on the substrate layer covering the orthographic projection of the pixel opening on the substrate layer.

[0060] The light-emitting device layer includes a first electrode and a second electrode, the light-emitting layer is located between the first electrode and the second electrode, a portion of the first encapsulation layer is connected to the support layer, and the refractive index of the first encapsulation layer is greater than the refractive index of the support layer;

[0061] A first encapsulation layer is disposed between the second encapsulation layer and the light-emitting device layer;

[0062] There is a case where part of the second electrode is located between the support layer and the first encapsulation layer, and the refractive index of the second electrode is greater than that of the support layer and less than that of the first encapsulation layer.

[0063] In some embodiments, the display panel is characterized by further comprising:

[0064] A third encapsulation layer is disposed between the first encapsulation layer and the second encapsulation layer;

[0065] A third filter layer is disposed between the second encapsulation layer and the third encapsulation layer, and / or the third filter layer is disposed between the second encapsulation layer and the first isolation layer.

[0066] In some embodiments, at least a portion of the orthographic projection of the support layer onto the substrate falls within the orthographic projection of the pixel defining layer onto the substrate; and / or,

[0067] At least a portion of the orthographic projection of the pixel defining layer onto the substrate falls within the orthographic projection of the support layer onto the substrate;

[0068] The orthographic projection boundary of the support layer on the substrate layer and the orthographic projection boundary of the pixel defining layer on the substrate layer are spaced apart.

[0069] In some embodiments, the thickness of the support layer is greater than or equal to the thickness of the pixel defining layer, the thickness direction is perpendicular to the plane of the substrate layer, and the light transmittance of the pixel defining layer is less than the light transmittance of the support layer.

[0070] In some embodiments, the first hollow inner wall includes at least two stepped surfaces, two adjacent stepped surfaces are used to form a stepped structure, and the extended surface of at least one stepped surface intersects the plane where the substrate layer is located.

[0071] In some embodiments, the display panel is characterized by further comprising:

[0072] A touch layer is disposed on the side of the second encapsulation layer away from the substrate layer. The touch layer includes a first touch electrode, a second touch electrode, a light-shielding layer, and a protective layer, wherein the protective layer includes at least one inorganic layer.

[0073] A first isolation layer is disposed between the first touch electrode and the second touch electrode, the first touch electrode is disposed between the second encapsulation layer and the first isolation layer, the light-shielding layer is disposed between the second touch electrode and the protective layer, and the refractive index of the first isolation layer is less than the refractive index of the protective layer;

[0074] The orthographic projection of the light-shielding layer on the substrate covers the orthographic projections of the first touch electrode and the second touch electrode on the substrate, and the orthographic projection of the light-shielding layer on the substrate does not overlap with the orthographic projection of the pixel opening on the substrate.

[0075] In some embodiments, the angle between the plane containing the support layer and the substrate layer ranges from 60° to 80°; and / or,

[0076] The refractive index of the first encapsulation layer is in the range of 1.4 to 1.5; and / or,

[0077] The refractive index of the second encapsulation layer is in the range of 1.4 to 1.5; and / or,

[0078] The refractive index of the support layer is in the range of 1.2 to 1.3; and / or,

[0079] The refractive index of the second filter layer is in the range of 1.6 to 1.7; and / or,

[0080] The refractive index of the first filter layer is in the range of 1.6 to 1.7; and / or,

[0081] The refractive index of the second filter layer ranges from 1.6 to 1.7.

[0082] A third aspect of this disclosure provides a display device, comprising:

[0083] The display panel as described in the first or second aspect of the claim. Attached Figure Description

[0084] Figure 1 is a schematic partial structural diagram of a display panel provided in an embodiment of this disclosure;

[0085] Figure 2 is a schematic spectral diagram of a display panel provided in an embodiment of this disclosure;

[0086] Figure 3 is a schematic partial structural diagram of another display panel provided in an embodiment of this disclosure;

[0087] Figure 4 is a schematic partial structural diagram of another display panel provided in an embodiment of this disclosure;

[0088] Figure 5 is a schematic partial structural diagram of another display panel provided in an embodiment of this disclosure;

[0089] Figure 6 is a schematic partial structural diagram of another display panel provided in an embodiment of this disclosure;

[0090] Figure 7 is a schematic partial structural diagram of a display panel provided in an embodiment of this disclosure;

[0091] Figure 8 is a schematic partial structural diagram of another display panel provided in an embodiment of this disclosure;

[0092] Figure 9 is a schematic partial structural diagram of another display panel provided in an embodiment of this disclosure;

[0093] Figure 10 is a schematic partial structural diagram of another display panel provided in an embodiment of the present disclosure;

[0094] Figure 11 is a schematic partial structural diagram of a display panel provided in an embodiment of this disclosure;

[0095] Figure 12 is a schematic partial structural diagram of another display panel provided in an embodiment of this disclosure;

[0096] Figure 13 is a schematic partial structural diagram of another display panel provided in an embodiment of this disclosure;

[0097] Figure 14 is a schematic partial structural diagram of a display panel provided in an embodiment of this disclosure;

[0098] Figure 15 is a schematic partial structural diagram of another display panel provided in an embodiment of this disclosure;

[0099] Figure 16 is a schematic structural diagram of a display device provided in an embodiment of this disclosure. Detailed Implementation

[0100] To better understand the technical solutions provided in the embodiments of this specification, the technical solutions of the embodiments of this specification will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the embodiments of this specification and the specific features in the embodiments are detailed descriptions of the technical solutions of the embodiments of this specification, rather than limitations on the technical solutions of this specification. In the absence of conflict, the embodiments of this specification and the technical features in the embodiments can be combined with each other.

[0101] In this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, without necessarily requiring or implying any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element. The term "two or more" includes two or more cases.

[0102] Currently, display devices with advantages such as high-generation production capacity and low cost are widely used in televisions, computers, mobile phones, and other fields. With the rise of display technologies such as LCD and OLED, improving the brightness of the displayed image is one of the important factors in enhancing the user experience; therefore, improving the display effect is crucial. However, existing displays are susceptible to the influence of external moisture, which can easily cause changes in the internal spectrum of the display, affecting the display effect.

[0103] In view of this, the present disclosure provides a display panel and display device that can prevent changes in the spectrum caused by moisture and improve the display effect.

[0104] A first aspect of this disclosure provides a display panel. FIG1 is a schematic partial structural diagram of a display panel provided in an embodiment of this disclosure. As shown in FIG1, the display panel includes a driving substrate 100, a light-emitting device layer 200, a support layer 300, a first encapsulation layer 400, a first filter layer 500, and a second encapsulation layer 600. The driving substrate 100 includes a substrate layer 101 and a driving layer 102, with the driving layer 102 disposed on one side of the substrate layer 101. The substrate layer 101 may be a flexible substrate or a rigid substrate, and the driving layer 102 may include pixel circuits and driving circuits, etc. The pixel circuits and driving circuits of the driving layer 102 can be used to drive the light-emitting device to emit light. The light-emitting device layer 200 is disposed on the side of the driving layer 102 away from the first substrate 101, and the light-emitting device layer 200 includes a pixel defining layer 201 and a light-emitting layer 202. The pixel defining layer 201 includes a plurality of pixel openings 203, and the light-emitting layer 202 is disposed within the pixel openings 203. A support layer 300 is disposed on the side of the pixel defining layer 201 away from the substrate layer 101. The angle between the extended surface of the support layer's inclined surface and the plane of the substrate layer 101 is greater than 30°. By covering the pixel defining layer 201 with the support layer 300, the pixel opening can be raised, thereby increasing the film layer step. The larger the angle between the extended surface of the support layer's inclined surface and the plane of the substrate layer 101, the larger the film layer step. Extending the height of the corresponding inclined surfaces of the support layer 300 and the pixel defining layer 201 increases the area of ​​the inclined surfaces, thereby increasing the reflective surface area and improving the light extraction efficiency. The support layer 300 includes multiple first cutouts 301. The orthographic projection of the first cutouts 301 onto the substrate layer 101 covers the orthographic projection of the pixel opening 203 onto the substrate layer 101. The orthographic light emitted from the light-emitting layer 202 is directly emitted to the display side through the first cutouts 301. A first encapsulation layer 400 is disposed on the side of the light-emitting device layer 200 and the support layer 300 away from the substrate layer 101. A second encapsulation layer 600 is disposed on the side of the first encapsulation layer 400 away from the substrate layer 101. Both the first encapsulation layer 400 and the second encapsulation layer can be inorganic encapsulation layers made of inorganic materials. The second encapsulation layer 600 can also be an organic encapsulation layer. A first filter layer 500 is disposed between the first encapsulation layer 400 and the second encapsulation layer 600. The first filter layer 500 includes organic materials and can filter light of the target wavelength band. The inorganic encapsulation layer can prevent water vapor from entering, thus protecting the spectrum of the first filter layer 500 from being altered by water vapor and affecting its filtering effect. The inorganic first encapsulation layer 400 and the second encapsulation layer 600 can prevent water vapor from entering the light-emitting device layer 200, preventing short circuits in the light-emitting device layer and affecting its light emission.

[0105] For example, the support layer 300 can be disposed on the same layer as the support column of the display panel. The support column and the support layer 300 can also be used to provide support to prevent the light-emitting device from being damaged under external pressure, thus affecting the light emission of the display panel.

[0106] Referring to Figure 1, the first filter layer 500 can be a film layer that covers the entire layer. The orthographic projection of the first filter layer 500 on the substrate layer 101 covers the orthographic projection of the first cutout 301 and the pixel opening 203 on the substrate layer. The first cutout is connected to the pixel opening. The inner wall of the first hollow can be a slope, and the inner wall of the pixel opening 203 can also be a slope. The first encapsulation layer 400 and the first filter layer 500 are both covered on the inner wall of the first hollow. The refractive index of the first filter layer 500 is greater than that of the first encapsulation layer 400. When the incident angle meets the condition of total internal reflection, a first reflective surface 410 can be formed at the contact surface between the first filter layer 500 and the first encapsulation layer 400. Since there is a refractive index difference between the high-refractive-index first filter layer 500 and the low-refractive-index first encapsulation layer 400, the first light ray S1 with a large viewing angle emitted from the light-emitting layer 202 is reflected by the first reflective surface 410, which gathers the first light ray S1 with a large viewing angle to the display side. That is, the light path of the light ray with a large viewing angle tends to be emitted at a positive viewing angle, thereby increasing the positive light output of the display panel. Furthermore, due to the refractive index difference between the high-refractive-index first filter layer 500 and the low-refractive-index first encapsulation layer 400, a refractive surface can be formed at the contact interface between the first filter layer 500 and the first encapsulation layer 400. Wide-angle light rays emitted from the light-emitting layer 202 (light rays incident below the normal to the inclined surface) enter the low-refractive-index first encapsulation layer 400 from the high-refractive-index first filter layer 500, causing the wide-angle light rays to diverge away from the normal, i.e., converge towards the positive viewing angle. By setting the refractive index difference between the first filter layer and the first encapsulation layer, wide-angle light rays can be made to converge towards the positive viewing angle through both reflection and refraction, thereby improving the positive viewing angle light emission efficiency of the light-emitting device for display purposes.

[0107] The first filter layer can be used to transmit light of the target wavelength, achieving a filtering effect, filtering out light of the target color, achieving high brightness and color purity in the display, and improving the display effect of the display panel.

[0108] By setting the support structure 300, the film layer difference formed by the support layer 300 and the pixel defining layer 201 can be increased, the height of the corresponding inclined surfaces of the support layer 300 and the pixel defining layer 201 can be extended, the area of ​​the inclined surfaces can be increased, and thus the reflective surface area can be increased, improving the light extraction efficiency. The support layer can also serve a supporting function.

[0109] Typically, the filter layer in a display panel is located outside the encapsulation layer. When the display panel is exposed to external moisture, the spectrum of the filter layer can easily change, thus affecting the display effect.

[0110] The display panel provided in this embodiment has multiple first hollows in the support layer, with an inclined surface formed on the inner wall of each hollow. A first filter layer and a first encapsulation layer are both covered on the inclined surface, causing wide-viewing-angle light emitted from the light-emitting layer to undergo total internal reflection at the contact surface between the high-refractive-index first filter layer and the low-refractive-index first encapsulation layer. This allows the wide-viewing-angle light emitted from the light-emitting layer to converge into the frontal field of view on the display side. Utilizing the refractive index difference between the first filter layer and the first encapsulation layer, the wide-viewing-angle light emitted from the light-emitting layer is refracted at the contact surface between the high-refractive-index first filter layer and the low-refractive-index first encapsulation layer. The first filter layer is positioned between the first encapsulation layer and the second encapsulation layer to prevent moisture intrusion and avoid altering the spectrum of the first filter layer surface, thus affecting its filtering effect. The wide-viewing-angle light is converged towards the frontal viewing direction through both reflection and refraction. Simultaneously, the light emitted from the light-emitting layer is filtered to extract the target color, achieving high-brightness image display and improving the display panel's display effect.

[0111] In some embodiments, the display panel further includes at least two inorganic layers, and a first filter layer may be disposed between the at least two inorganic layers.

[0112] For example, the first encapsulation layer 400 may include at least one inorganic layer, and the second encapsulation layer 600 may include at least one inorganic layer. The first encapsulation layer 400 may include two inorganic encapsulation layers, and the second encapsulation layer 600 may include two inorganic layers. The first encapsulation layer 400 may include multiple inorganic encapsulation layers, and the second encapsulation layer 600 may include multiple inorganic layers. By placing the first filter layer 500 between at least two inorganic layers, moisture can be prevented from seeping into the first filter layer and affecting the display effect. Furthermore, by adjusting the number of organic and inorganic encapsulation layers, the spacing between the light-emitting layer and the first filter layer can be adjusted, achieving different display effects.

[0113] In some embodiments, the first filter layer 500 can transmit multiple target light organic film layers. Using a single first filter layer 500 instead of the conventional three-stage red, green, and blue filter films reduces process steps and lowers processing costs.

[0114] For example, the first filter layer 500 may include a film layer formed by mixing phase retardation materials corresponding to red, green, and blue wavelengths. The transmittance of the first filter layer 500 may be in the range of 70% to 80%, and the first filter layer 500 may transmit multiple R (red), G (green), and B (blue) visible light bands to achieve color image display.

[0115] Figure 2 is a schematic spectral diagram of a filter layer provided in an embodiment of this disclosure. The transmittance spectrum of the first filter layer 500 has transmittance troughs in the wavelength ranges of 480 nm to 530 nm and 580 nm to 630 nm, respectively.

[0116] Referring to Figure 2, it can be seen that the spectrum of the first filter layer 500 has transmittance troughs in the wavelength range of 480nm to 530nm and in the wavelength range of 580nm to 630nm. Thus, three transmittance peaks can be obtained for wavelengths of 380nm to 480nm, 480nm to 580nm, and 630nm to 780nm. The peak at 380nm to 480nm corresponds to the transmission of blue light, the peak at 480nm to 580nm corresponds to the transmission of green light, and the peak at 630nm to 780nm corresponds to the transmission of red light, thereby enabling the first filter layer to transmit all three colors of light.

[0117] For example, as shown in Figure 2, when the wavelength of the light emitted by the light-emitting layer 202 is 450nm, the first filter layer 500 can transmit blue light, and the transmittance of the first filter layer 500 is 75%; when the wavelength of the light emitted by the light-emitting layer 202 is 530nm, the first filter layer 500 can transmit green light, and the transmittance of the first filter layer 500 is 70%; when the wavelength of the light emitted by the light-emitting layer 202 is 680nm, the first filter layer 500 can transmit red light, and the transmittance of the first filter layer 500 is 80%. The first filter layer 500 can transmit red, green, and blue light simultaneously. The phase retardation material of the first filter layer 500 can filter out light of the corresponding target wavelength band, while light of other wavelength bands is absorbed by the first filter layer 500. This includes natural light from the external environment of the display panel incident on the first filter layer 500, preventing color mixing on the display side, thereby improving the image quality of the displayed image.

[0118] In some embodiments, the first filter layer 500 includes multiple filter regions, which may be multiple alternating red, green, and blue filter regions. The orthogonal projection of the filter regions onto the substrate layer covers the orthogonal projection of the pixel opening onto the substrate layer, wherein each filter region covers one pixel opening, with the red filter region corresponding to the red emissive layer, the green filter region corresponding to the green emissive layer, and the blue filter region corresponding to the blue emissive layer. Different filter regions can be fabricated using phase retardation materials with different target wavelengths. The light emitted from the emissive layer passes through different filter regions to emit light of different target wavelengths, avoiding color mixing on the display side and thus achieving a filtering effect to improve the image quality of the displayed image.

[0119] For example, the first filter layer 500 may be prepared by injecting a mixed solution of red, green and blue materials into an acrylic plate, which can filter out light of the corresponding wavelength.

[0120] Figure 3 is a schematic partial structural diagram of another display panel provided in an embodiment of this disclosure. Exemplarily, as shown in Figure 3, the display panel further includes a first isolation layer 700 and a second filter layer 510. The first isolation layer is disposed on the side of the second encapsulation layer 600 away from the substrate layer 101, the second encapsulation layer 600 is disposed on the side of the third encapsulation layer 800 away from the substrate layer 101, and the second filter layer 510 is disposed between the first isolation layer 700 and the second encapsulation layer 600. The second filter layer 510 may include a mixture of R, G, and B filter materials, and the second filter layer 510 can transmit light of corresponding wavelengths to improve image quality. The second filter layer 510 may use the same material as the first filter layer 500. The first isolation layer 700 includes at least one inorganic layer, and the second filter layer 510 is disposed between the second encapsulation layer 600 and the first isolation layer 700, which can protect the second filter layer 510, prevent moisture from penetrating the second filter layer 510, and avoid changes in the spectrum of the second filter layer 510, thereby improving the display effect.

[0121] For example, the thickness of the third encapsulation layer ranges from 4μm to 12μm. By adjusting the thickness of the third encapsulation layer, the deflection path of the light changes after passing through the third filter layer, thus achieving different display effects while ensuring that the light is emitted in the forward direction to the display side.

[0122] For example, as shown in Figure 3, the refractive index of the second filter layer 510 is greater than that of the first isolation layer 700. The wide-angle seventh ray S7 emitted from the light-emitting layer 202 is refracted at the contact surface between the second filter layer 510 and the first isolation layer 700, and the wide-angle seventh ray S7 is focused onto the display side. The ray S07 is obtained by the seventh ray S7 passing sequentially through the first encapsulation layer 400, the third encapsulation layer 800, the second encapsulation layer 600, and the second filter layer 510.

[0123] For example, as shown in Figure 3, the light ray S08 is obtained by the eighth light ray S8 passing sequentially through the first encapsulation layer 400, the third encapsulation layer 800, the second encapsulation layer 600, and the second filter layer 510. The wide-angle eighth light ray S8 emitted from the light-emitting layer 202 is refracted at the contact surface between the second filter layer 510 and the first isolation layer 700, and the wide-angle eighth light ray S8 is focused to the display side.

[0124] For example, the display panel can be provided with a first filter layer 500 and a second filter layer 510 at the same time. The wide-viewing-angle light emitted from the light-emitting layer 202 is first focused by passing through the contact surface between the first filter layer 500 and the first encapsulation layer 400, and then focused again by passing through the contact surface between the second filter layer 510 and the first isolation layer 700. The setting of the two filter layers performs two filtering and two focusing of the light, thereby achieving a high-brightness and high-quality display effect.

[0125] For example, the first isolation layer 700 may include two or more inorganic layers. The number of inorganic layers can be adjusted according to the actual display requirements so that the light emission angle after passing through the first isolation layer 700 changes, thereby achieving different display effects.

[0126] For example, the second filter layer 510 can be a patterned filter layer. The size of the second filter layer 510 on the side closer to the substrate layer 101 is larger than the size of the second filter layer 510 on the side farther from the substrate layer 101, that is, the second filter layer has a structure that is narrower at the top and wider at the bottom. The angle between the extended surface of the side of the second filter layer 510 and the plane where the substrate layer 101 is located can be an acute angle. The first isolation layer 700 covers the patterned second filter layer 510, which can locally raise the first isolation layer 700. The difference in film layer formed by the first isolation layer 700 and the second filter layer 510 can extend the height of the corresponding inclined surface of the first isolation layer 700 and the second filter layer 510, increase the area of ​​the inclined surface, and thus increase the reflective surface area and improve the light extraction efficiency. The refractive index of the first isolation layer 700 is set to be less than that of the second filter layer, so that a first refractive surface 710 is formed at the contact surface between the first isolation layer 700 and the side of the second filter layer 510. This allows the wide-view light emitted from the light-emitting layer 202 to be refracted at the first refractive surface 710, concentrating the wide-view light to the display side and improving the light emission efficiency of the display panel.

[0127] For example, a first encapsulation layer 400 covers a support layer 300. The refractive index of the first encapsulation layer 400 is greater than that of the support layer 300, so that a second reflective surface 310 is formed at the contact surface between the first encapsulation layer 400 and the support layer 300. The angle between the second reflective surface 310 and the plane containing the substrate layer 101 is greater than 30°, that is, the angle between the extended surface of the inclined surface of the support layer and the plane containing the substrate layer 101 is greater than 30°. The wide-viewing-angle light emitted from the light-emitting layer 202 is first focused on the second reflective surface 310 and then focused a second time on the first refractive surface 710. Through these two light-focusing processes, the wide-viewing-angle light emitted from the light-emitting layer 202 is focused to the display side, which can prevent the leakage of wide-viewing-angle light, increase the forward light emission of the display panel, and thus improve the light emission efficiency of the display panel.

[0128] For example, Figure 4 is a schematic optical path diagram of a display panel provided in an embodiment of this disclosure. As shown in Figure 4, a first filter layer 500 covers a first encapsulation layer 400, and the first encapsulation layer 400 covers a support layer 300. The refractive index of the first encapsulation layer 400 is greater than that of the support layer 300. The third ray S3 with a wide viewing angle emitted from the light-emitting layer 202 is refracted by the second reflective surface 310. The refractive index of the first filter layer is greater than that of the first encapsulation layer 400. The fourth ray S4 with a wide viewing angle emitted from the light-emitting layer 202 is reflected by the first reflective surface 410. By utilizing the refractive index difference between the first filter layer 500 and the first encapsulation layer 400, and the refractive index difference between the first encapsulation layer 400 and the support layer 300, the wide-viewing-angle light is brought closer to the positive viewing angle through reflection and refraction, thereby improving the positive viewing angle light emission efficiency of the light-emitting device for display purposes.

[0129] In some embodiments, the display panel further includes a third encapsulation layer 800 and a third filter layer 520. The third encapsulation layer is disposed between the first encapsulation layer 400 and the second encapsulation layer 600. The third encapsulation layer 800 may include one, two, or multiple organic layers, and the number of organic layers can be adjusted according to actual display requirements to change the light emission angle after passing through the third encapsulation layer 800, thereby achieving different display effects. The third filter layer 520 may include a mixture of R, G, and B organic filter materials, and the third filter layer 520 can transmit light of corresponding wavelengths to achieve image display.

[0130] It should be noted that the materials of the third filter layer 520, the second filter layer 510, and the first filter layer 500 can be the same, and the spectra of the third filter layer 520, the second filter layer 510, and the first filter layer 500 can be the same, all of which can enable the transmission of red, blue, and other colors of light.

[0131] Figure 5 is a schematic partial structural diagram of another display panel provided in an embodiment of this disclosure. Exemplarily, as shown in Figure 5, the third encapsulation layer 800 may be disposed between the first encapsulation layer 400 and the second encapsulation layer 600, and the third filter layer 520 may be disposed between the third encapsulation layer 800 and the second encapsulation layer 600. The orthogonal projection of the third filter layer 520 on the substrate layer 101 covers the orthogonal projection of the light-emitting device layer 200 on the substrate layer 101, and the orthogonal projection of the third filter layer 520 on the substrate layer 101 covers the orthogonal projection of the third encapsulation layer 800 on the substrate layer 101. The third filter layer may be a filter layer disposed as a single, continuous layer. Both the first encapsulation layer 400 and the second encapsulation layer 600 can be inorganic encapsulation layers, while the third encapsulation layer 800 can be an organic encapsulation layer. An organic layer is disposed on the side of the third filter layer 520 near the substrate layer 101. Fabricating a third filter layer 520 composed of organic materials on an organic material can reduce the difficulty of film processing. Then, the organic third filter layer 520 and the organic third encapsulation layer 800 are disposed between the two inorganic layers. On the one hand, this can protect the third filter layer 520 from moisture intrusion and prevent changes in the spectrum of the third filter layer 520. On the other hand, it can prevent moisture from intruding into the light-emitting device layer, preventing short circuits in the light-emitting device layer, improving the display effect, and extending the service life of the display panel.

[0132] Figure 6 is a schematic partial structural diagram of another display panel provided in an embodiment of this disclosure. Exemplarily, as shown in Figure 6, a third filter layer 520 is disposed between the second encapsulation layer 600 and the first isolation layer 700. The orthographic projection of the first isolation layer on the substrate layer 101 covers the orthographic projection of the third filter layer 520 on the substrate layer 101. The third filter layer can be a single, integral layer. The first isolation layer 700 and the second encapsulation layer 600 are inorganic layers. Disposing the third filter layer between these two inorganic layers protects the third filter layer 520, prevents moisture intrusion, prevents changes in the spectrum of the third filter layer 520, and improves the display effect.

[0133] In some examples, the display panel may simultaneously provide a full-layer third filter layer 520 between the second encapsulation layer 600 and the first isolation layer 700 and between the third encapsulation layer 800 and the second encapsulation layer 600.

[0134] For example, when the third filter layer 520 is disposed between the second encapsulation layer 600 and the first isolation layer 700, or when the third filter layer 520 is disposed between the third encapsulation layer 800 and the second encapsulation layer 600, the first encapsulation layer, the second encapsulation layer, and the first isolation layer all serve to isolate moisture. In this case, the wide-viewing-angle light emitted from the light-emitting layer is focused by the first reflective surface, so that the display panel can achieve high-quality image display while improving the protection of the filter layer and the light-emitting device layer, thereby improving the reliability and display effect of the display panel.

[0135] Figure 7 is a schematic partial structural diagram of a display panel provided in an embodiment of this disclosure. Exemplarily, as shown in Figure 7, the display panel further includes a touch layer 900. The touch layer 900 is disposed on the side of the third filter layer 520 away from the substrate layer 101, and on the side of the second encapsulation layer 600 away from the substrate layer 101. The touch layer 900 includes a first touch electrode 901 and a second touch electrode 902. The first touch electrode 901 is disposed on the side of the second encapsulation layer 600 away from the substrate layer 101, and the second touch electrode 902 is disposed on the side of the first touch electrode 901 away from the substrate layer 101. A first isolation layer 700 is disposed between the first touch electrode 901 and the second touch electrode 902.

[0136] For example, as shown in Figure 7, the display panel further includes a light-shielding layer 903 and a protective layer 904. The light-shielding layer 903 is disposed on the side of the second touch electrode 902 away from the substrate layer 101, and the protective layer 904 is disposed on the side of the light-shielding layer 903 away from the substrate layer 101. The refractive index of the first isolation layer 700 can be less than the refractive index of the protective layer 904, causing the light to diverge and exit to the display side. Alternatively, the refractive index of the first isolation layer 700 can be greater than the refractive index of the protective layer 904, causing the light to converge and exit to the display side. By setting the difference between the refractive indices of the first isolation layer 700 and the protective layer 904, the direction of light emission can be changed, achieving different display effects. The orthographic projection of the light-shielding layer 903 on the substrate layer 101 covers the orthographic projections of the first touch electrode 901 and the second touch electrode 902 on the substrate layer 101. The light-shielding layer 903 completely covers the touch electrodes, preventing the touch electrodes from reflecting natural light and affecting the display effect. The orthographic projection of the light-shielding layer 903 on the substrate layer 101 does not overlap with the orthographic projection of the pixel opening 203 on the substrate layer 101, so as to avoid blocking the positive viewing angle light emitted from the light-emitting layer.

[0137] For example, referring to FIG7, the first isolation layer 700 serves as an insulating layer between the first touch electrode 901 and the second touch electrode 902. The second filter layer 510 may be disposed between the first isolation layer 700 and the second encapsulation layer 600, and the third filter layer 520 may be disposed between the first isolation layer 700 and the second encapsulation layer 600. By disposing the filter layer between the two inorganic layers, the protection of the filter layer is achieved.

[0138] Figure 8 is a schematic partial structural diagram of another display panel provided in an embodiment of this disclosure. For example, as shown in Figure 8, the second filter layer 510 can be disposed between the first isolation layer 700 and the second encapsulation layer 600. The light-shielding layer 903 is disposed on the side of the first isolation layer 700 away from the substrate layer 101. The orthographic projection of the light-shielding layer 903 on the substrate layer 101 overlaps with the orthographic projection of the side of the first isolation layer 700 on the substrate layer 101, but the orthographic projection of the light-shielding layer 903 on the substrate layer 101 does not overlap with the orthographic projection of the second filter layer 510 on the substrate layer 101. This avoids the patterned second filter layer, preventing light transmission to the second filter layer and the first encapsulation layer, while simultaneously satisfying the light-shielding and touch functions.

[0139] Figure 9 is a schematic partial structural diagram of another display panel provided in an embodiment of this disclosure. Exemplarily, as shown in Figure 9, the light-emitting device layer 200 includes a first electrode 205 and a second electrode 206. The first electrode 205 is disposed on the side close to the substrate layer 101, and the second electrode 206 is disposed on the side away from the substrate layer 101. The light-emitting layer 202 is located between the first electrode 205 and the second electrode 206, and the first electrode 205 and the second electrode 206 together drive the light-emitting layer 202 to emit light.

[0140] For example, as shown in Figure 9, the first encapsulation layer 400 is connected to the support layer 300, and the first encapsulation layer 400 covers the support layer 300. The second electrode is disposed directly above the pixel opening 203. The orthographic projection of the second electrode 206 on the substrate layer 101 does not overlap with the orthographic projection of the support layer 300 on the substrate layer 101, but the orthographic projection of the second electrode 206 on the substrate layer 101 overlaps with the orthographic projection of the pixel opening 203 on the substrate layer 101. The refractive index of the first encapsulation layer 400 is greater than that of the support layer 300, causing the wide-viewing-angle light emitted from the light-emitting layer 202 to be reflected by the contact surface between the support layer 300 and the first encapsulation layer 400, thus focusing the wide-viewing-angle light onto the display side.

[0141] For example, the second electrode 206 can be the cathode of the light-emitting device, and the first electrode 205 can be the anode of the light-emitting device.

[0142] Figure 10 is a schematic partial structural diagram of another display panel provided in an embodiment of this disclosure. Exemplarily, as shown in Figure 10, a second electrode 206 is disposed between a support layer 300 and a first encapsulation layer 400. The orthographic projection of the second electrode 206 onto the substrate layer 101 covers the orthographic projection of the light-emitting device layer 200 onto the substrate layer. The orthographic projection of the first encapsulation layer 400 onto the substrate layer 101 covers the second electrode 206. The refractive index of the second electrode is greater than that of the support layer 300, and the refractive index of the second electrode 206 is less than that of the first encapsulation layer 400. A third reflective surface 320 is formed at the contact surface between the second electrode 206 and the support layer 300, and a fourth reflective surface 420 is formed at the contact surface between the first encapsulation layer 400 and the second electrode 206. A portion of the wide-angle light emitted from the light-emitting layer 202 undergoes a single reflection at the contact surface between the support layer 300 and the second electrode 206, and a portion of the wide-angle light emitted from the light-emitting layer 202 undergoes a single reflection at the contact surface between the second electrode 206 and the first encapsulation layer 400. The angle of light incident on the contact surface between the support layer 300 and the second electrode 206 is greater than the angle of light incident on the contact surface between the second electrode 206 and the first encapsulation layer 400. By setting the orthogonal projection of the second electrode 206 on the substrate layer 101 to cover the orthogonal projection of the light-emitting device layer 200 on the substrate layer, and performing two reflections in the light-emitting device layer, more light with a wide viewing angle can be gathered, thereby improving the light emission efficiency of the display panel.

[0143] For example, as shown in Figure 10, the fifth ray S5 with a wide viewing angle emitted from the light-emitting layer 202 is reflected by the third reflective surface 320, and the sixth ray S6 with a wide viewing angle emitted from the light-emitting layer 202 is reflected by the fourth reflective surface 420.

[0144] In some embodiments, the orthographic projection of a portion of the support layer 300 onto the substrate 101 falls within the orthographic projection of the pixel defining layer 201 onto the substrate 101, or the orthographic projection of a portion of the pixel defining layer 201 onto the substrate 101 falls within the orthographic projection of the support layer 300 onto the substrate 101. The boundary of the orthographic projection of the support layer 300 onto the substrate 101 and the boundary of the orthographic projection of the pixel defining layer 201 onto the substrate 101 are spaced apart.

[0145] Figure 11 is a schematic partial structural diagram of a display panel provided in an embodiment of this disclosure. Exemplarily, as shown in Figure 11, the orthographic projection of the pixel defining layer 201 onto the substrate layer 101 falls within the orthographic projection of the support layer 300 onto the substrate layer 101. The support layer 300 completely covers the pixel defining layer 201, and the first encapsulation layer 400 covers both the support layer 300 and the light-emitting device layer 200. By setting the support layer 300 to completely cover the pixel defining layer 201, and fabricating the support layer 300 on the basis of the pixel defining layer 201, the thickness of the support layer 300 is increased. The greater the thickness of the support layer 300, the longer the inclined surface where the first hollow inner wall is located, the larger the contact surface formed between the support layer 300 and the adjacent film layer, the more wide-viewing-angle light can be reflected, and the higher the light emission efficiency of the display panel.

[0146] Figure 12 is a schematic partial structural diagram of another display panel provided in an embodiment of this disclosure. Exemplarily, as shown in Figure 12, the orthographic projection of the support layer 300 onto the substrate layer 101 falls within the orthographic projection of the pixel defining layer 201 onto the substrate layer 101. The support layer 300 partially covers the pixel defining layer 201, and the first encapsulation layer 400 covers the support layer 300 and the light-emitting device layer 200. By partially covering the pixel defining layer 201 with the support layer 300, the support layer 300 can cover at least a portion of the surface of the pixel defining layer 201 away from the substrate layer 101, such that the angle of the light incident on the support layer onto the first hollow inner wall is greater than the angle of the light incident on the side of the pixel defining layer 201. The inward contour of the support layer 300 forms a stepped structure with the pixel defining layer 201, increasing the area of ​​the inclined surface and thus increasing the reflective surface area. This allows for gradient reflection of wide-viewing-angle light, converging more wide-viewing-angle light and improving the light emission efficiency of the display panel.

[0147] For example, as shown in FIG12, the inner wall of the first perforation of the support layer 300 includes at least two stepped surfaces. The first stepped surface 311 is formed on the plane of the pixel defining layer 201 near the support layer 300, and the second stepped surface 312 is formed on the side surface of the support layer 300. The first stepped surface 311 is used to reflect light leaking from the contact plane between the support layer and the pixel defining layer 201, and the second stepped surface 312 is used to reflect wide-angle light emitted from the light-emitting layer 202.

[0148] For example, as shown in FIG12, the inner wall of the first hollow section of the support layer 300 may further include a third stepped surface 313, which is formed on the side of the pixel defining layer 201. Adjacent first stepped surfaces 311 and third stepped surfaces 313 can form a stepped structure, and adjacent second stepped surfaces 312 and third stepped surfaces 313 can also form a stepped structure. The extended surfaces of both the first stepped surface 311 and the third stepped surface 313 can intersect the plane of the substrate layer 101, and the second stepped surface 312 is parallel to the plane of the substrate layer 101. By providing at least two stepped surfaces on the inner wall of the first hollow section, light leakage at large viewing angles can be effectively prevented.

[0149] For example, the thickness of the support layer 300 is greater than or equal to the thickness of the pixel defining layer 201, and the thickness direction is perpendicular to the plane of the substrate layer 101. The pixel defining layer is black, and the light transmittance of the pixel defining layer 201 is less than that of the support layer 300. By setting the thickness of the support layer 300 to be greater than or equal to the thickness of the pixel defining layer 201, the length of the contact surface formed between the support layer 300 and the adjacent film layer can be extended, resulting in more wide-viewing-angle light being reflected.

[0150] In some embodiments, the angle between the plane containing the support layer and the substrate layer ranges from 60° to 80°, the refractive index of the first encapsulation layer ranges from 1.4 to 1.5, the refractive index of the second encapsulation layer ranges from 1.4 to 1.5, the refractive index of the third encapsulation layer can range from 1.6 to 1.7, the refractive index of the support layer ranges from 1.2 to 1.3, the refractive index of the first filter layer ranges from 1.6 to 1.7, the refractive index of the second filter layer ranges from 1.6 to 1.7, the refractive index of the third filter layer ranges from 1.6 to 1.7, and the refractive index of the first isolation layer ranges from 1.4 to 1.5.

[0151] For example, the thickness of the first filter layer ranges from 2.5 μm to 3.5 μm, the thickness of the second filter layer ranges from 2.5 μm to 3.5 μm, and the thickness of the third filter layer ranges from 2.5 μm to 3.5 μm. The thickness of the filter layers can be adjusted according to actual display requirements to adapt to different display effects. This disclosure will not elaborate on each of these details.

[0152] For example, as shown in FIG3, when the second filter layer 510 is disposed between the second encapsulation layer 600 and the first isolation layer 700, and the size of the second filter layer 510 on the side closer to the substrate layer 101 is larger than the size of the second filter layer 510 on the side farther from the substrate layer 101, the refractive index of the second filter layer 510 can be 1.6, 1.65, or 1.7. The refractive index of the first isolation layer 700 can be 1.4, 1.45, or 1.5. The refractive index of the support layer 300 can be 1.2, 1.25, or 1.3. By setting the refractive index of the second filter layer 510 to be greater than that of the first isolation layer 700, and utilizing the low-refractive-index first isolation layer 700 and the high-refractive-index second filter layer 510, light is reflected at the contact surface between the second filter layer 510 and the first isolation layer 700, thus achieving light focusing. Simultaneously, by setting the refractive index of the first encapsulation layer 400 to be greater than that of the support layer 300, and utilizing the low-refractive-index support layer 300 and the high-refractive-index first encapsulation layer 400, light is reflected at the contact surface between the first encapsulation layer 400 and the support layer 300, thus achieving light focusing. Through these two light focusing processes, a greater amount of forward light is achieved.

[0153] For example, the thickness of the support layer can range from 1.5 μm to 2 μm. The side of the support layer 300 and the plane of the substrate layer 101 form a first angle α, which is an acute angle and is greater than 30°.

[0154] For example, as shown in Figure 12, the first included angle α can be 60°, 70°, or 80°. The smaller the first included angle, the smaller the angle of the reflective surface formed on the support layer surface, and the better the focusing effect on light from a wide viewing angle.

[0155] Figure 13 is a schematic partial structural diagram of another display panel provided in an embodiment of this disclosure. For example, as shown in Figure 13, when the first filter layer 500 is disposed between the first encapsulation layer 400 and the second encapsulation layer 600, the first encapsulation layer 400 covers the support layer 300 and the light-emitting device layer 200, and the second encapsulation layer 600 has a first isolation layer 700 and a protective layer 904 disposed on the side away from the substrate layer 101, the refractive index of the first encapsulation layer 400, the refractive index of the second encapsulation layer 600, the refractive index of the first isolation layer 700, and the refractive index of the protective layer 904 can all be set to be the same. The refractive indices of the first encapsulation layer 400, the second encapsulation layer 600, the first isolation layer 700, and the protective layer 904 can all be 1.4; the refractive indices of the first encapsulation layer 400, the second encapsulation layer 600, the first isolation layer 700, and the protective layer 904 can all be 1.45; and the refractive indices of the first encapsulation layer 400, the second encapsulation layer 600, the first isolation layer 700, and the protective layer 904 can all be 1.5. The refractive indices of the third encapsulation layer can be 1.6, 1.65, or 1.7. The refractive indices of the first filter layer 500 can also be 1.6, 1.65, or 1.7. The refractive index of the support layer 300 can be 1.2, 1.25, or 1.3. The refractive index of the first encapsulation layer 400 is less than that of the first filter layer 500, but greater than that of the support layer 300. Utilizing the refractive index difference between the first encapsulation layer 400 and the first filter layer 500, light is reflected at the contact surface between them. Similarly, utilizing the refractive index difference between the first encapsulation layer 400 and the support layer 300, light is reflected at the same contact surface. Through these two reflections, a wider angle of light convergence is achieved. Setting the refractive indices of the first encapsulation layer, the second encapsulation layer, the first isolation layer, and the protective layer to be the same avoids refractive index differences between the layers that could alter the light's emission direction and affect its forward emission.

[0156] A second aspect of this disclosure provides a display panel, and FIG14 is a schematic partial structural diagram of a display panel provided in an embodiment of this disclosure. Exemplarily, as shown in FIG14, the display panel includes a driving substrate 100, a light-emitting device layer 200, a second encapsulation layer 600, a first isolation layer 700, and a second filter layer 510. The driving substrate 100 includes a substrate layer 101 and a driving layer 102, with the driving layer 102 disposed on one side of the substrate layer 101. The substrate layer 101 may be a flexible substrate or a rigid substrate, and the driving layer 102 may include pixel circuits and driving circuits, etc. The pixel circuits and driving circuits of the driving layer 102 can be used to drive the light-emitting device to emit light. The light-emitting device layer 200 is disposed on the side of the driving layer 102 away from the first substrate 101, and the light-emitting device layer 200 includes a pixel defining layer 201 and a light-emitting layer 202. The pixel defining layer 201 includes a plurality of pixel openings 203, and the light-emitting layer 202 is disposed within the pixel openings 203. The second encapsulation layer 600 is disposed on the side of the light-emitting device layer 200 away from the substrate layer 101. The second encapsulation layer 600 covers the light-emitting device layer 200 and can prevent moisture ingress to prevent short circuits in the light-emitting device. The first isolation layer 700 is disposed on the side of the second encapsulation layer 600 away from the substrate layer 101. The first filter layer can be used to transmit light of the target wavelength band, achieving a filtering effect, filtering out light of the target color, achieving high brightness and color purity of the display, and improving the display effect of the display panel. Both the second encapsulation layer 600 and the first isolation layer 700 can be inorganic encapsulation layers. The second filter layer 510 is disposed between the second encapsulation layer 600 and the first isolation layer 700. The inorganic encapsulation layer can prevent moisture ingress to protect the spectrum of the second filter layer 510 from being altered by moisture, thus preventing it from affecting the filtering effect of the second filter layer 510. The refractive index of the second filter layer 520 is greater than that of the first isolation layer 700, so that a first refractive surface 710 is formed at the contact surface between the first isolation layer 700 and the side of the second filter layer 510. This causes the wide-view light emitted from the light-emitting layer 202 to be refracted at the first refractive surface 710, which focuses the wide-view light to the display side and improves the light emission efficiency of the display panel.

[0157] The display panel provided in this embodiment has a second filter layer disposed between a second encapsulation layer and a first isolation layer to prevent moisture intrusion and avoid changes in the spectrum of the second filter layer surface, thus affecting its filtering effect. The refractive index of the second filter layer is set to be greater than that of the first isolation layer, so that the positive viewing angle and wide viewing angle light emitted from the light-emitting layer are refracted at the contact surface between the low-refractive-index first isolation layer filter layer and the high-refractive-index second filter layer, thereby converging the positive viewing angle and wide viewing angle light emitted from the light-emitting layer into the front field of view on the display side.

[0158] For example, the second filter layer 510 can be a patterned filter layer. The size of the second filter layer 510 on the side closer to the substrate layer 101 is larger than the size of the second filter layer 510 on the side farther from the substrate layer 101. That is, the second filter layer has a structure that is narrower at the top and wider at the bottom. The angle between the extended surface of the side of the second filter layer 510 and the plane where the substrate layer 101 is located can be an acute angle. The first isolation layer 700 covers the patterned filter layer 510, which can locally raise the first isolation layer 700. The difference in film layer formed by the first isolation layer 700 and the second filter layer 510 can extend the height of the corresponding inclined surface of the first isolation layer 700 and the second filter layer 510, increase the area of ​​the inclined surface, and thus increase the reflective surface area and improve the light extraction efficiency. The refractive index of the first isolation layer 700 is set to be less than that of the second filter layer, so that a first refractive surface 710 is formed at the contact surface between the first isolation layer 700 and the side of the second filter layer 510. This allows the wide-view light emitted from the light-emitting layer 202 to be refracted at the first refractive surface 710, concentrating the wide-view light to the display side and improving the light emission efficiency of the display panel.

[0159] For example, as shown in Figure 14, the ninth ray S9 with a wide viewing angle emitted from the light-emitting layer 202 is refracted by the first refractive surface 710 to achieve the focusing of the wide viewing angle light emitted from the light-emitting layer.

[0160] This embodiment of the present disclosure forms a patterned second filter layer by setting the size of one side of the second filter layer substrate layer to be larger than the size of the side of the second filter layer away from the substrate layer. A first isolation layer is placed on the side of the second filter layer as an inclined surface so that refraction occurs at the contact surface between the low-refractive-index first isolation layer filter layer and the high-refractive-index second filter layer. By placing the second filter layer between the second encapsulation layer and the first isolation layer, moisture is prevented from penetrating the second filter layer. While focusing the light, the light emitted from the light-emitting layer can be filtered to filter out the light of the target color, thereby achieving high-brightness image display and improving the display effect of the display panel.

[0161] For example, the orthographic projection of the second filter layer 510 on the substrate layer 101 covers the orthographic projection of the pixel opening 203 on the substrate layer 101, and the orthographic projection of the second filter layer 510 on the substrate layer does not overlap or only partially overlaps with the orthographic projection of the pixel defining layer 201 on the substrate layer 101. When the orthographic projection of the second filter layer 510 on the substrate layer does not overlap with the orthographic projection of the pixel defining layer 201 on the substrate layer 101, the orthographic projection of the second filter layer 510 on the substrate layer falls into the orthographic projection of the pixel opening 203 on the substrate layer. The refractive index of the second filter layer 510 is greater than the refractive index of the first isolation layer 700, so that the positive angle light emitted from the light-emitting layer 202 is refracted at the contact surface between the second filter layer 510 and the first isolation layer 700, thereby converging the positive angle light emitted from the light-emitting layer.

[0162] For example, when the orthographic projection of the second filter layer 510 on the substrate overlaps with the orthographic projection of the pixel defining layer 201 on the substrate 101, the orthographic projection of the second filter layer 510 on the substrate partially covers the orthographic projection of the pixel defining layer 201 on the substrate, and the orthographic projection of the second filter layer 510 on the substrate completely covers the orthographic projection of the pixel opening 203 on the substrate. The size of the second filter layer 510 on the side closer to the substrate 101 is larger than the size of the second filter layer 510 on the side farther from the substrate 101, and the refractive index of the second filter layer 510 is greater than the refractive index of the first isolation layer 700. This causes the frontal angle light and wide angle light emitted from the light-emitting layer to be refracted at the contact surface between the second filter layer 510 and the first isolation layer 700. This can simultaneously converge the frontal angle light and wide angle light emitted from the light-emitting layer 202. While converging the light, the light emitted from the light-emitting layer 202 can be filtered to filter out the light of the target color, thereby achieving a high-brightness image display.

[0163] In some embodiments, the display panel further includes at least two inorganic layers, and a second filter layer may be disposed between the at least two inorganic layers.

[0164] For example, the first isolation layer 700 may include at least one inorganic layer, and the second encapsulation layer 600 may include at least one inorganic layer. The first isolation layer 700 may include two inorganic encapsulation layers, and the second encapsulation layer 600 may include two inorganic layers. The first isolation layer 700 may include multiple inorganic encapsulation layers, and the second encapsulation layer 600 may include multiple inorganic layers. By placing the first filter layer 500 between at least two inorganic layers, moisture can be prevented from seeping into the first filter layer and affecting the display effect. Furthermore, by adjusting the number of organic and inorganic encapsulation layers, the spacing between the light-emitting layer and the first filter layer can be adjusted, achieving different display effects.

[0165] In some embodiments, the second filter layer 510 can be an organic film layer through which multiple target rays pass. Using a single second filter layer 510 instead of the conventional three-stage red, green, and blue filter films reduces the number of process steps and lowers processing costs.

[0166] For example, the second filter layer 510 may include a film layer formed by mixing phase retardation materials corresponding to red, green, and blue wavelengths. The transmittance of the first filter layer 500 may be in the range of 70% to 80%, and the second filter layer 510 may transmit multiple R (red), G (green), and B (blue) visible light bands to achieve color image display.

[0167] For example, the first filter layer 500 has transmittance troughs in the transmittance spectrum in the wavelength ranges of 480nm to 530nm and 580nm to 630nm, respectively.

[0168] Referring to Figure 2, it can be seen that the spectrum of the first filter layer 500 has transmittance troughs in the wavelength range of 480nm to 530nm and in the wavelength range of 580nm to 630nm. Thus, three transmittance peaks can be obtained for wavelengths of 380nm to 480nm, 480nm to 580nm, and 630nm to 780nm. The peak at 380nm to 480nm corresponds to the transmission of blue light, the peak at 480nm to 580nm corresponds to the transmission of green light, and the peak at 630nm to 780nm corresponds to the transmission of red light, thereby enabling the first filter layer to transmit all three colors of light.

[0169] For example, as shown in Figure 2, when the wavelength of the light emitted by the light-emitting layer 202 is 450nm, the second filter layer 510 can transmit blue light, and the transmittance of the second filter layer 510 is 75%; when the wavelength of the light emitted by the light-emitting layer 202 is 530nm, the second filter layer 510 can transmit green light, and the transmittance of the second filter layer 510 is 70%; when the wavelength of the light emitted by the light-emitting layer 202 is 680nm, the first filter layer 500 can transmit red light, and the transmittance of the second filter layer 510 is 80%. The second filter layer 510 can transmit red, green, and blue light simultaneously. The phase retardation material of the second filter layer 510 can filter out light of the corresponding target wavelength band, while light of other wavelength bands is absorbed by the second filter layer 510. This includes natural light from the external environment of the display panel incident on the second filter layer 510, preventing color mixing on the display side and thus improving the image quality of the display.

[0170] In some embodiments, the second filter layer 510 includes multiple filter regions, which may be multiple alternating red, green, and blue filter regions. The orthogonal projection of the filter regions onto the substrate layer covers the orthogonal projection of the pixel opening onto the substrate layer, wherein each filter region covers one pixel opening, with the red filter region corresponding to the red emissive layer, the green filter region corresponding to the green emissive layer, and the blue filter region corresponding to the blue emissive layer. Different filter regions can be fabricated using phase retardation materials with different target wavelengths. The light emitted from the emissive layer passes through different filter regions to emit light of different target wavelengths, avoiding color mixing on the display side and thus achieving a filtering effect to improve the image quality of the displayed image.

[0171] For example, the second filter layer 510 can be prepared by injecting a mixed solution of red, green and blue materials into an acrylic plate, which can filter out light of the corresponding wavelength.

[0172] Figure 15 is a schematic partial structural diagram of another display panel provided in an embodiment of this disclosure. Exemplarily, as shown in Figure 15, the display panel further includes a first encapsulation layer 400, a third encapsulation layer 800, and a first light filter layer 510. The first light filter layer 500 may be a film layer covering the entire surface, and the second light filter layer 510 may be made of the same material as the first light filter layer 500. The first encapsulation layer 400 is disposed on the side of the light-emitting device layer 200 away from the substrate layer 101, and the second encapsulation layer 800 is disposed on the side of the first encapsulation layer 400 away from the substrate layer 101. Both the first encapsulation layer 400 and the second encapsulation layer may be inorganic encapsulation layers made of inorganic materials. The third encapsulation layer may be an organic encapsulation layer. The third encapsulation layer 800 is disposed between the first encapsulation layer 400 and the second encapsulation layer 600, and the first filter layer 500 is disposed between the third encapsulation layer 800 and the first encapsulation layer 400. An organic layer is disposed on the side of the third filter layer 520 near the substrate layer 101. The first filter layer 500 composed of organic material is prepared on the organic material, which can reduce the difficulty of film processing. The organic first filter layer 510 and the organic third encapsulation layer 800 are disposed between the two inorganic layers. On the one hand, it can prevent water vapor from entering the first filter layer 510 and prevent the spectrum of the first filter layer 510 from changing. On the other hand, it can prevent water vapor from entering the light-emitting device layer and prevent the light-emitting device layer from short-circuiting, thereby improving the display effect and extending the service life of the display panel.

[0173] For example, the thickness of the third encapsulation layer ranges from 4μm to 12μm. By adjusting the thickness of the third encapsulation layer, the deflection path of the light changes after passing through the third filter layer, thus achieving different display effects while ensuring that the light is emitted in the forward direction to the display side.

[0174] For example, as shown in FIG15, the first light ray S1 with a wide angle emitted from the light-emitting layer 202 is refracted by the first reflective surface 410, and the light ray S01 is obtained after the first light ray S1 passes through the first encapsulation layer 400, the first filter layer 500, the third encapsulation layer 800, and the second encapsulation layer 600 once.

[0175] For example, as shown in Figure 15, the second ray S2 with a wide viewing angle emitted from the light-emitting layer 202 is reflected by the second reflective surface 310. The ray S02 is obtained by the second ray S2 passing sequentially through the support layer 300, the first encapsulation layer 400, the first filter layer 500, the third encapsulation layer 800, and the second encapsulation layer 600.

[0176] The first filter layer can be used to transmit light of the target wavelength, achieving a filtering effect, filtering out light of the target color, achieving high brightness and color purity in the display, and improving the display effect of the display panel.

[0177] For example, the display panel can simultaneously have a first filter layer 500 and a second filter layer 510. The wide-viewing-angle light emitted from the light-emitting layer 202 first passes through the contact surface between the first filter layer 500 and the first encapsulation layer 400 for initial light focusing, and then passes through the contact surface between the second filter layer 510 and the first isolation layer 700 for further light focusing. The two filter layers perform two rounds of filtering and focusing, achieving a high-brightness, high-quality display effect. Utilizing the refractive index difference between the first filter layer 500 and the first encapsulation layer 400, the wide-viewing-angle light is directed towards the positive viewing angle through reflection and refraction, thereby improving the positive viewing angle light emission efficiency of the light-emitting device for display purposes.

[0178] For example, as shown in FIG15, the display panel further includes a support layer 300, which is disposed between the pixel defining layer 201 and the first encapsulation layer 400. By setting the support structure 300, the film layer difference formed by the support layer 300 and the pixel defining layer 201 can be increased, the height of the corresponding inclined surface of the support layer 300 and the pixel defining layer 201 can be extended, the area of ​​the inclined surface can be increased, and thus the reflective surface area can be increased, thereby improving the light extraction efficiency.

[0179] For example, the support layer 300 can be disposed on the same layer as the support column of the display panel. The support column and the support layer 300 can also be used to provide support to prevent the light-emitting device from being damaged under external pressure, thus affecting the light emission of the display panel.

[0180] As exemplarily shown in Figure 5, the display panel further includes a third encapsulation layer 800 and a third filter layer 520. The third encapsulation layer is disposed between the first encapsulation layer 400 and the second encapsulation layer 600. The third encapsulation layer 800 may include one, two, or multiple organic layers. The number of organic layers can be adjusted according to actual display requirements to change the light emission angle after passing through the third encapsulation layer 800, thereby achieving different display effects. The third filter layer 520 may include a mixture of R, G, and B organic filter materials. The third filter layer 520 can transmit light of corresponding wavelengths to achieve image display.

[0181] For example, as shown in FIG5, the first filter layer 500, the second filter layer 510, and the third filter layer 520 can be made of the same material. The third encapsulation layer 800 can be disposed between the first encapsulation layer 400 and the second encapsulation layer 600, and the third filter layer 520 is disposed between the third encapsulation layer 800 and the second encapsulation layer 600. The orthogonal projection of the third filter layer 520 on the substrate layer 101 covers the orthogonal projection of the light-emitting device layer 200 on the substrate layer 101. At the same time, the orthogonal projection of the third filter layer 520 on the substrate layer 101 covers the orthogonal projection of the third encapsulation layer 800 on the substrate layer 101. The third filter layer can be a filter layer disposed as a single layer. The first encapsulation layer 400 and the second encapsulation layer 600 are inorganic encapsulation layers, and the third encapsulation layer 800 is an organic encapsulation layer. An organic layer is disposed on the side of the third filter layer 520 near the substrate layer 101. Preparing a third filter layer 520 composed of organic materials on an organic material can reduce the difficulty of film processing. Then, the organic material third filter layer 520 and the organic third encapsulation layer 800 are disposed between the two inorganic layers. On the one hand, this can protect the third filter layer 520 from moisture intrusion and prevent changes in the spectrum of the third filter layer 520. On the other hand, it can prevent moisture from intruding into the light-emitting device layer, prevent short circuits in the light-emitting device layer, improve the display effect, and extend the service life of the display panel.

[0182] For example, as shown in FIG6, the third filter layer 520 is disposed between the second encapsulation layer 600 and the first isolation layer 700. The orthographic projection of the first isolation layer on the substrate layer 101 covers the orthographic projection of the third filter layer 520 on the substrate layer 101. The third filter layer can be a filter layer disposed as a single layer. The first isolation layer 700 and the second encapsulation layer 600 are inorganic layers. Disposing the third filter layer between the two inorganic layers protects the third filter layer 520, prevents moisture intrusion, prevents changes in the spectrum of the third filter layer 520, and improves the display effect.

[0183] In some examples, the display panel may simultaneously provide a full-layer third filter layer 520 between the second encapsulation layer 600 and the first isolation layer 700 and between the third encapsulation layer 800 and the second encapsulation layer 600.

[0184] For example, when the third filter layer 520 is disposed between the second encapsulation layer 600 and the first isolation layer 700, or when the third filter layer 520 is disposed between the third encapsulation layer 800 and the second encapsulation layer 600, the first encapsulation layer, the second encapsulation layer, and the first isolation layer all serve to isolate moisture. In this case, the wide-viewing-angle light emitted from the light-emitting layer is focused by the first reflective surface, so that the display panel can achieve high-quality image display while improving the protection of the filter layer and the light-emitting device layer, thereby improving the reliability and display effect of the display panel.

[0185] It should be noted that the materials of the third filter layer 520, the second filter layer 510, and the first filter layer 500 can be the same, and the spectra of the third filter layer 520, the second filter layer 510, and the first filter layer 500 can be the same, all of which can enable the transmission of red, blue, and other colors of light.

[0186] For example, as shown in FIG7, the display panel further includes a touch layer 900. The touch layer 900 is disposed on the side of the third filter layer 520 away from the substrate layer 101, and on the side of the second encapsulation layer 600 away from the substrate layer 101. The touch layer 900 includes a first touch electrode 901 and a second touch electrode 902. The first touch electrode 901 is disposed on the side of the second encapsulation layer 600 away from the substrate layer 101, and the second touch electrode 902 is disposed on the side of the first touch electrode 901 away from the substrate layer 101. A first isolation layer 700 is disposed between the first touch electrode 901 and the second touch electrode 902.

[0187] For example, as shown in Figure 7, the display panel further includes a light-shielding layer 903 and a protective layer 904. The light-shielding layer 903 is disposed on the side of the second touch electrode 902 away from the substrate layer 101, and the protective layer 904 is disposed on the side of the light-shielding layer 903 away from the substrate layer 101. The refractive index of the first isolation layer 700 can be less than the refractive index of the protective layer 904, causing the light to diverge and exit to the display side. Alternatively, the refractive index of the first isolation layer 700 can be greater than the refractive index of the protective layer 904, causing the light to converge and exit to the display side. By setting the difference between the refractive indices of the first isolation layer 700 and the protective layer 904, the direction of light emission can be changed, achieving different display effects. The orthographic projection of the light-shielding layer 903 on the substrate layer 101 covers the orthographic projections of the first touch electrode 901 and the second touch electrode 902 on the substrate layer 101. The light-shielding layer 903 completely covers the touch electrodes, preventing the touch electrodes from reflecting natural light and affecting the display effect. The orthographic projection of the light-shielding layer 903 on the substrate layer 101 does not overlap with the orthographic projection of the pixel opening 203 on the substrate layer 101, so as to avoid blocking the positive viewing angle light emitted from the light-emitting layer.

[0188] For example, as shown in FIG8, the second filter layer 510 can be disposed between the first isolation layer 700 and the second encapsulation layer 600, and the light-shielding layer 903 is disposed on the side of the first isolation layer 700 away from the substrate layer 101. The orthographic projection boundary of the light-shielding layer 903 on the substrate layer 101 overlaps with the orthographic projection boundary of the side of the first isolation layer 700 on the substrate layer 101, and the orthographic projection of the light-shielding layer 903 on the substrate layer 101 does not overlap with the orthographic projection of the second filter layer 510 on the substrate layer 101, so as to avoid the patterned second filter layer and the patterned first isolation layer, avoid the light transmission of the second filter layer and the first encapsulation layer, and simultaneously satisfy the light-shielding and touch functions.

[0189] For example, the first isolation layer 700 serves as an insulating layer for the first touch electrode 901 and the second touch electrode 902. The second filter layer 510 can be disposed between the first isolation layer 700 and the second encapsulation layer 600, and the third filter layer 520 can be disposed between the first isolation layer 700 and the second encapsulation layer 600. By disposing of the filter layer between the two inorganic layers, the protection of the filter layer is achieved.

[0190] For example, as shown in FIG9, the support layer 300 includes a plurality of first cutouts. The orthographic projection of the first cutouts 301 on the substrate layer 101 covers the orthographic projection of the pixel openings 201 on the substrate layer 101, and the first cutouts are connected to the pixel openings. The positive viewing angle light emitted from the light-emitting layer 202 is directly emitted to the display side through the first cutouts 301. The light-emitting device layer 200 includes a first electrode 205 and a second electrode 206. The first electrode 205 is disposed on the side close to the substrate layer 101, and the second electrode 206 is disposed on the side away from the substrate layer 101. The light-emitting layer 202 is located between the first electrode 205 and the second electrode 206, and the first electrode 205 and the second electrode 206 together drive the light-emitting layer 202 to emit light.

[0191] For example, as shown in Figure 9, the first encapsulation layer 400 is connected to the support layer 300, and the first encapsulation layer 400 covers the support layer 300. The second electrode is disposed directly above the pixel opening 203. The orthographic projection of the second electrode 206 on the substrate layer 101 does not overlap with the orthographic projection of the support layer 300 on the substrate layer 101, but the orthographic projection of the second electrode 206 on the substrate layer 101 overlaps with the orthographic projection of the pixel opening 203 on the substrate layer 101. The refractive index of the first encapsulation layer 400 is greater than that of the support layer 300, causing the wide-viewing-angle light emitted from the light-emitting layer 202 to be reflected by the contact surface between the support layer 300 and the first encapsulation layer 400, thus focusing the wide-viewing-angle light onto the display side.

[0192] For example, the second electrode 206 can be the cathode of the light-emitting device, and the first electrode 205 can be the anode of the light-emitting device.

[0193] For example, as shown in FIG10, the second electrode 206 is disposed between the support layer 300 and the first encapsulation layer 400. The orthographic projection of the second electrode 206 on the substrate layer 101 covers the orthographic projection of the light-emitting device layer 200 on the substrate layer, and the orthographic projection of the first encapsulation layer 400 on the substrate layer 101 covers the second electrode 206. The refractive index of the second electrode is greater than that of the support layer 300, and the refractive index of the second electrode 206 is less than that of the first encapsulation layer 400, so that a third reflective surface 320 is formed at the contact surface between the second electrode 206 and the support layer 300, and a fourth reflective surface 420 is formed at the contact surface between the first encapsulation layer 400 and the second electrode 206. A portion of the wide-angle light emitted from the light-emitting layer 202 is reflected once at the contact surface between the support layer 300 and the second electrode 206, and a portion of the wide-angle light emitted from the light-emitting layer 202 is reflected once at the contact surface between the second electrode 206 and the first encapsulation layer 400. The angle of light incident on the contact surface between the support layer 300 and the second electrode 206 is greater than the angle of light incident on the contact surface between the second electrode 206 and the first encapsulation layer 400. By setting the orthogonal projection of the second electrode 206 on the substrate layer 101 to cover the orthogonal projection of the light-emitting device layer 200 on the substrate layer, and performing two reflections in the light-emitting device layer, more light with a wide viewing angle can be gathered, thereby improving the light emission efficiency of the display panel.

[0194] For example, as shown in Figure 10, the fifth ray S5 with a wide viewing angle emitted from the light-emitting layer 202 is reflected by the third reflective surface 320, and the sixth ray S6 with a wide viewing angle emitted from the light-emitting layer 202 is reflected by the fourth reflective surface 420.

[0195] In some embodiments, the orthographic projection of a portion of the support layer 300 onto the substrate 101 falls within the orthographic projection of the pixel defining layer 201 onto the substrate 101, or the orthographic projection of a portion of the pixel defining layer 201 onto the substrate 101 falls within the orthographic projection of the support layer 300 onto the substrate 101. The boundary of the orthographic projection of the support layer 300 onto the substrate 101 and the boundary of the orthographic projection of the pixel defining layer 201 onto the substrate 101 are spaced apart.

[0196] For example, as shown in Figure 11, the orthographic projection of the pixel defining layer 201 onto the substrate layer 101 falls within the orthographic projection of the support layer 300 onto the substrate layer 101. The support layer 300 completely covers the pixel defining layer 201, and the first encapsulation layer 400 covers both the support layer 300 and the light-emitting device layer 200. By setting the support layer 300 to completely cover the pixel defining layer 201, and fabricating the support layer 300 on top of the pixel defining layer 201, the thickness of the support layer 300 is increased. The greater the thickness of the support layer 300, the longer the plane containing the first hollow inner wall, the larger the contact surface formed between the support layer 300 and adjacent film layers, the more wide-viewing-angle light can be reflected, and the higher the light emission efficiency of the display panel.

[0197] For example, as shown in Figure 12, the orthographic projection of the support layer 300 on the substrate layer 101 falls within the orthographic projection of the pixel defining layer 201 on the substrate layer 101. The support layer 300 partially covers the pixel defining layer 201, and the first encapsulation layer 400 covers the support layer 300 and the light-emitting device layer 200. By setting the support layer 300 to partially cover the pixel defining layer 201, the support layer 300 can cover at least a portion of the surface of the pixel defining layer 201 away from the substrate layer 101, so that the angle of the light incident on the support layer on the first hollow inner wall is greater than the angle of the light incident on the side of the pixel defining layer 201. The inward contour of the support layer 300 and the pixel defining layer 201 form a stepped structure, increasing the area of ​​the inclined surface, thereby increasing the area of ​​the reflective surface, allowing the wide-viewing-angle light to undergo gradient reflection, converging more wide-viewing-angle light, and improving the light emission efficiency of the display panel.

[0198] For example, if the angle between the extended surface of the support layer slope and the plane where the substrate layer 101 is located is greater than 30°, and the support layer 300 covers the pixel defining layer 201, the pixel opening can be raised to increase the film layer step. The larger the angle between the extended surface of the support layer slope and the plane where the substrate layer 101 is located, the larger the film layer step. Extending the height of the corresponding slope of the support layer 300 and the pixel defining layer 201 increases the area of ​​the slope, thereby increasing the reflective surface area and improving the light extraction efficiency.

[0199] For example, as shown in FIG12, the inner wall of the first perforation of the support layer 300 includes at least two stepped surfaces. The first stepped surface 311 is formed on the plane of the pixel defining layer 201 near the support layer 300, and the second stepped surface 312 is formed on the side surface of the support layer 300. The first stepped surface 311 is used to reflect light leaking from the contact plane between the support layer and the pixel defining layer 201, and the second stepped surface 312 is used to reflect wide-angle light emitted from the light-emitting layer 202.

[0200] For example, as shown in FIG12, the inner wall of the first hollow section of the support layer 300 may further include a third stepped surface 313, which is formed on the side of the pixel defining layer 201. Adjacent first stepped surfaces 311 and third stepped surfaces 313 can form a stepped structure, and adjacent second stepped surfaces 312 and third stepped surfaces 313 can also form a stepped structure. The extended surfaces of both the first stepped surface 311 and the third stepped surface 313 can intersect the plane of the substrate layer 101, and the second stepped surface 312 is parallel to the plane of the substrate layer 101. By providing at least two stepped surfaces on the inner wall of the first hollow section, light leakage at large viewing angles can be effectively prevented.

[0201] For example, the thickness of the support layer 300 is greater than or equal to the thickness of the pixel defining layer 201, and the thickness direction is perpendicular to the plane of the substrate layer 101. The pixel defining layer is black, and the light transmittance of the pixel defining layer 201 is less than that of the support layer 300. By setting the thickness of the support layer 300 to be greater than or equal to the thickness of the pixel defining layer 201, on the one hand, the support layer can provide better support for the light-emitting device layer 200, improving the pressure resistance of the display panel; on the other hand, it extends the length of the contact surface formed between the support layer 300 and the adjacent film layer, resulting in more wide-viewing-angle light being reflected.

[0202] For example, as shown in Figure 12, the thickness of the support layer can range from 1.5 μm to 2 μm. The side of the support layer 300 forms a first angle α with the plane of the substrate layer 101. This first angle α is an acute angle and is greater than 30°. For example, the first angle α can be 60°, 70°, or 80°. The smaller the first angle α, the smaller the angle of the reflective surface, and the better the focusing effect on light from a wide viewing angle.

[0203] In some embodiments, the refractive index of the first encapsulation layer is in the range of 1.4 to 1.5, the refractive index of the second encapsulation layer is in the range of 1.4 to 1.5, the refractive index of the third encapsulation layer is in the range of 1.6 to 1.7, the refractive index of the support layer is in the range of 1.2 to 1.3, the refractive index of the second filter layer is in the range of 1.6 to 1.7, the refractive index of the first filter layer is in the range of 1.6 to 1.7, the refractive index of the third filter layer is in the range of 1.6 to 1.7, and the refractive index of the first isolation layer is in the range of 1.4 to 1.5.

[0204] For example, the thickness of the first filter layer ranges from 2.5 μm to 3.5 μm, the thickness of the second filter layer ranges from 2.5 μm to 3.5 μm, and the thickness of the third filter layer ranges from 2.5 μm to 3.5 μm. The thickness of the filter layers can be adjusted according to actual display requirements to adapt to different display effects. This disclosure will not elaborate on each of these details.

[0205] For example, as shown in FIG13, when the first filter layer 500 is disposed between the first encapsulation layer 400 and the second encapsulation layer 600, the first encapsulation layer 400 covers the support layer 300 and the light-emitting device layer 200, and the second encapsulation layer 600 is on the side away from the substrate layer 101, and the first isolation layer 700 and the protective layer 904 are disposed, the refractive index of the first encapsulation layer 400, the refractive index of the second encapsulation layer 600, the refractive index of the first isolation layer 700 and the refractive index of the protective layer 904 can all be set to be the same. With the first isolation layer 700 and the protective layer 904, the refractive indices of the first encapsulation layer 400, the second encapsulation layer 600, the first isolation layer 700, and the protective layer 904 can all be set to 1.4. Alternatively, with the first isolation layer 700 and the protective layer 904, the refractive indices of the first encapsulation layer 400, the second encapsulation layer 600, the first isolation layer 700, and the protective layer 904 can all be set to 1.45. Or, with the first isolation layer 700 and the protective layer 904, the refractive indices of the first encapsulation layer 400, the second encapsulation layer 600, the first isolation layer 700, and the protective layer 904 can all be set to 1.5. The refractive indices of the third encapsulation layer 800 are 1.6, 1.65, and 1.7. The refractive index of the first filter layer 500 can be 1.6, 1.65, or 1.7. The refractive index of the support layer 300 can be 1.2, 1.25, or 1.3. The refractive index of the first encapsulation layer 400 is less than that of the first filter layer 500, and greater than that of the support layer 300. By utilizing the refractive index difference between the first encapsulation layer 400 and the first filter layer 500, light is reflected at the contact surface between them. Similarly, by utilizing the refractive index difference between the first encapsulation layer 400 and the support layer 300, light is reflected at the contact surface between them. Through these two reflections, light is focused at a wider viewing angle. The refractive indices of the first encapsulation layer, the second encapsulation layer, the first isolation layer, and the protective layer are all set to be the same to avoid refractive index differences between the film layers, which would change the direction of light emission and affect the forward emission of light.

[0206] For example, as shown in FIG3, when the second filter layer 510 is disposed between the second encapsulation layer 600 and the first isolation layer 700, and the size of the second filter layer 510 on the side closer to the substrate layer 101 is larger than the size of the second filter layer 510 on the side farther from the substrate layer 101, the refractive index of the second filter layer 510 can be 1.6, 1.65, or 1.7. The refractive index of the first isolation layer 700 can be 1.4, 1.45, or 1.5. The refractive index of the support layer 300 can be 1.2, 1.25, or 1.3. By setting the refractive index of the second filter layer 510 to be greater than that of the first isolation layer 700, and utilizing the low-refractive-index first isolation layer 700 and the high-refractive-index second filter layer 510, light is reflected at the contact surface between the second filter layer 510 and the first isolation layer 700, thus achieving light focusing. Simultaneously, by setting the refractive index of the first encapsulation layer 400 to be greater than that of the support layer 300, and utilizing the low-refractive-index support layer 300 and the high-refractive-index first encapsulation layer 400, light is reflected at the contact surface between the first encapsulation layer 400 and the support layer 300, thus achieving light focusing. Through these two light focusing processes, a greater amount of forward light is achieved.

[0207] A third aspect of this disclosure provides a display device, and FIG16 is a schematic structural diagram of a display device provided in an embodiment of this disclosure. As shown in FIG16, the display device 2000 includes a display panel 1000 of a first aspect or a display panel 1000 of a second aspect.

[0208] This disclosure provides a display device in which a first filter layer is disposed between a first encapsulation layer and a second encapsulation layer to prevent moisture intrusion and avoid changes in the spectrum of the first filter layer surface, thus affecting its filtering effect. A support layer has multiple first cutouts, with an inclined surface formed on the inner wall of each cutout. Both the first filter layer and the first encapsulation layer are covered by this inclined surface. This causes wide-viewing-angle light emitted from the light-emitting layer to be reflected at the contact surface between the high-refractive-index first filter layer and the low-refractive-index first encapsulation layer, thereby converging the wide-viewing-angle light emitted from the light-emitting layer into the frontal field of view on the display side. By disposing the first filter layer between the first and second encapsulation layers, forming an inclined surface in the support layer, and setting the refractive index of the first filter layer to be greater than that of the first encapsulation layer, the light emitted from the light-emitting layer can be filtered while converging the light, filtering out the target color light, achieving high-brightness image display, and improving the display effect of the display panel.

[0209] For example, the display panel fabrication process can sequentially fabricate a driving substrate, a light-emitting device layer, a support layer, and an encapsulation layer. The driving substrate can be formed by exposure and development on a substrate to create electrode layers. Multiple electrode layers, such as gate, source, and drain electrodes, are electrically connected to form a driving circuit and a pixel circuit, used to drive the light-emitting layer to emit light. The pixel defining layer can also be formed by exposure and development, and the support layer is also formed by exposure and development. The encapsulation layer can be fabricated using an evaporation process to create an inorganic encapsulation layer, or by inkjet printing to create an organic encapsulation layer. The filter layer can be fabricated by filling the light-emitting device layer using a coating, exposure, and development process.

[0210] It should be noted that the descriptions of each embodiment in the above embodiments have different focuses. For parts that are not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0211] The above embodiments are only used to illustrate the technical solutions of this disclosure, and are not intended to limit it. Although this disclosure has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this disclosure.

[0212] Although preferred embodiments have been described in this specification, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of this specification.

[0213] Obviously, those skilled in the art can make various modifications and variations to this specification without departing from its spirit and scope. Therefore, if such modifications and variations fall within the scope of the claims and their equivalents, this specification is also intended to include such modifications and variations.

Claims

1. A display panel, comprising: A driving substrate, the driving substrate including a substrate layer and a driving layer, the driving layer being disposed on one side of the substrate layer; A light-emitting device layer is disposed on the side of the driving layer away from the substrate layer. The light-emitting device layer includes a pixel defining layer and a light-emitting layer. The pixel defining layer includes a plurality of pixel openings, and the light-emitting layer is disposed in the pixel openings. A support layer is disposed on the side of the pixel defining layer away from the substrate layer. The support layer includes a plurality of first cutouts, the orthogonal projection of the first cutouts on the substrate layer covering the orthogonal projection of the pixel opening on the substrate layer. A first encapsulation layer is disposed on the side of the light-emitting device layer and the support layer away from the substrate layer; A first filter layer is disposed on the side of the first encapsulation layer away from the substrate layer. The orthographic projection of the first filter layer on the substrate layer covers the orthographic projection of the first cutout and the pixel opening on the substrate layer. The refractive index of the first filter layer is greater than the refractive index of the first encapsulation layer.

2. The display panel according to claim 1, further comprising: At least two inorganic layers, with the first filter layer disposed between the at least two inorganic layers.

3. The display panel according to claim 2, wherein, The first filter layer is used to transmit light in multiple target wavelength bands.

4. The display panel according to claim 3, wherein, The first filter layer has transmittance troughs in the wavelength ranges of 480nm to 530nm and 580nm to 630nm, respectively.

5. The display panel according to claim 2, wherein, The first filter layer includes multiple filter regions, wherein at least two of the filter regions are used to transmit light of different target wavelengths; The orthogonal projection of the filter region onto the substrate layer overlaps the orthogonal projection of the pixel opening onto the substrate layer.

6. The display panel according to claim 1, further comprising: A second encapsulation layer is disposed on the side of the first filter layer away from the substrate layer. The first encapsulation layer includes at least one inorganic layer, and / or the second encapsulation layer includes at least one inorganic layer.

7. The display panel according to claim 6, further comprising: A first isolation layer is disposed on the side of the second encapsulation layer away from the substrate layer, and the first isolation layer includes at least one inorganic layer; A second filter layer is disposed between the second encapsulation layer and the first isolation layer. The size of the second filter layer on the side closer to the substrate is larger than the size of the second filter layer on the side farther from the substrate, and the refractive index of the second filter layer is greater than the refractive index of the first isolation layer.

8. The display panel according to claim 6 or 7, further comprising: A third encapsulation layer is disposed between the first filter layer and the second encapsulation layer, and the third encapsulation layer includes an organic layer; A first isolation layer is disposed on the side of the second encapsulation layer away from the substrate layer, and the first isolation layer includes at least one inorganic layer; A third filter layer, wherein the orthographic projection of the third filter layer on the substrate layer overlaps the orthographic projection of the light-emitting device layer on the substrate layer; The third filter layer is disposed between the second encapsulation layer and the first isolation layer; and / or, The third filter layer is disposed between the second encapsulation layer and the third encapsulation layer.

9. The display panel according to claim 7, further comprising: A touch layer is disposed on the side of the second encapsulation layer away from the substrate layer. The touch layer includes a first touch electrode, a second touch electrode, a light-shielding layer, and a protective layer, wherein the protective layer includes at least one organic layer. A first isolation layer is disposed between the first touch electrode and the second touch electrode, the first touch electrode is disposed between the second encapsulation layer and the first isolation layer, the light-shielding layer is disposed between the second touch electrode and the protective layer, and the refractive index of the first isolation layer is less than the refractive index of the protective layer; The orthographic projection of the light-shielding layer on the substrate covers the orthographic projections of the first touch electrode and the second touch electrode on the substrate, and the orthographic projection of the light-shielding layer on the substrate does not overlap with the orthographic projection of the pixel opening on the substrate.

10. The display panel according to claim 7, wherein, The light-emitting device layer includes a first electrode and a second electrode, the light-emitting layer is located between the first electrode and the second electrode, a portion of the first encapsulation layer is connected to the support layer, and the refractive index of the first encapsulation layer is greater than the refractive index of the support layer; There is a case where part of the second electrode is located between the support layer and the first encapsulation layer, and the refractive index of the second electrode is greater than that of the support layer and less than that of the first encapsulation layer.

11. The display panel according to claim 1, wherein, At least a portion of the orthographic projection of the support layer onto the substrate layer falls within the orthographic projection of the pixel defining layer onto the substrate layer; And / or, At least a portion of the orthographic projection of the pixel defining layer onto the substrate falls within the orthographic projection of the support layer onto the substrate; The orthographic projection boundary of the support layer on the substrate layer and the orthographic projection boundary of the pixel defining layer on the substrate layer are spaced apart.

12. The display panel according to claim 11, wherein, The thickness of the support layer is greater than or equal to the thickness of the pixel defining layer, and the thickness direction is perpendicular to the plane of the substrate layer. The light transmittance of the pixel defining layer is less than the light transmittance of the support layer.

13. The display panel according to claim 12, wherein, The first hollow inner wall includes at least two stepped surfaces, two adjacent stepped surfaces are used to form a stepped structure, and the extended surface of at least one stepped surface intersects the plane where the substrate layer is located.

14. A display panel, comprising: A driving substrate, the driving substrate including a substrate layer and a driving layer, the driving layer being disposed on one side of the substrate layer; A light-emitting device layer is disposed on the side of the driving layer away from the substrate layer. The light-emitting device layer includes a pixel defining layer and a light-emitting layer. The pixel defining layer includes a plurality of pixel openings, and the light-emitting layer is disposed in the pixel openings. A second encapsulation layer is disposed on the side of the light-emitting device layer away from the substrate layer, and the second encapsulation layer covers the light-emitting device layer; A first isolation layer is disposed on the side of the second encapsulation layer away from the substrate layer; A second filter layer is disposed between the second encapsulation layer and the first isolation layer. The orthographic projection of the second filter layer on the substrate layer covers the orthographic projection of the pixel opening on the substrate layer. The orthographic projection of the second filter layer on the substrate layer does not overlap or partially overlaps with the orthographic projection of the pixel defining layer on the substrate layer. The refractive index of the second filter layer is greater than that of the first isolation layer.

15. A display device, comprising: The display panel as described in any one of claims 1 to 14.

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